Cessna gas caps

How to keep the Cessna 170 flying and airworthy.

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burdman
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Joined: Wed Nov 17, 2021 2:34 pm

Cessna gas caps

Post by burdman »

Hello was wondering if anyone knows if you can rebuild or get parts for the Cessna fuel caps aircraft spruce part number of cap is C156003-0101 thanks
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falco
Posts: 210
Joined: Tue May 25, 2010 5:44 pm

Re: Cessna gas caps

Post by falco »

The silicone rubber vent valve can be found by googleing "umbrella valve." A lifetime supply of those can be obtained for a very reasonable sum with a minimum of searching. Installation is trivial.
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GAHorn
Posts: 20967
Joined: Fri Apr 12, 2002 8:45 pm

Re: Cessna gas caps

Post by GAHorn »

Falco offers a good suggestion. I found them on Amazon I think…I’ll try to locate a link again. I believe the discussion was at :

viewtopic.php?f=24&t=14764&p=145113&hil ... ve#p145113

The fuel cap base-gasket:
The ones sold for Cessna Caps at Spruce (PN Part# 06-00987) measure: 2-3/16" OD x 1-1/2" ID x 1/8" thickness, cost about $15.
https://www.aircraftspruce.com/catalog/ ... ey=4546659

The ones I found useful for caps, oil-fill caps, and gascolators are: Spruce Part# 05-01059 and measure 1-1/2" ID, 2-1/4" OD, 1/8" Thick, cost about $3. I buy extras to keep on-hand. https://www.aircraftspruce.com/catalog/ ... lange3.php
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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GAHorn
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Joined: Fri Apr 12, 2002 8:45 pm

Re: Cessna gas caps

Post by GAHorn »

OK….here are what the “umbrella valves” look like…. I believe I got these https://www.amazon.com/Quick-Fuel-Techn ... 18&sr=8-19

Here’s pic of the ones I have in my parts-box, also known as “Holley 26-41” valves, and as 23-2 valves for Holley carburetors:
15207C97-1ADC-4791-BBA4-3734A755F65A.jpeg
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
burdman
Posts: 3
Joined: Wed Nov 17, 2021 2:34 pm

Re: Cessna gas caps

Post by burdman »

Thanks for all your information. by chance does anyone know if they make the metal part on the cap that locks it to the filter lid it’s wear you hook up the retaining chain to. Thanks again
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